The last time we had a Vantec heatsink on the chopping block was early on in
the summer, and as we move into the fall with the CCK7025 CopperX-478 we can
take note of a few things. First off, Vantec heatsinks are just about 100% copper
these days (although a new all aluminum heatsink is expected shortly), and
secondly we can see that they have upgraded their manufacturing a
bit.

It is really nice, and somewhat reassuring to see that the CCK7025 has a well machined copper base. The base and the fins of the CCK7025 are copper, and the aluminum shroud is all aluminum (thankfully, we seem to
be past that plate everything copper stage). That old copper plating technique made everything shiny, but it didn't really add anything to the heatsink performance wise.

The clipping system is the
same as was used on the Vantec GSN-7025,
and it works just as well as it did on that all aluminum cooler. With the interlocking copper fins forming a support for the
clip, we get good compression on the socket without placing too much stress on the underlying PCB.
The interlocking copper fins are something I actually saw first showcased about two years ago at
Comedex by a company called Neng Tyi.

The aluminum fan shroud stands about 1mm proud
of the base surface which gives good scratch protection I suppose. The shroud is
held in place with a few screws and while it may look copper in the picture
above, it is really just anodized that way.